replace values?

[River Huang]

Dear All, I have this data set:

* Example generated by -dataex-. To install: ssc install dataex
clear
input float(id split) byte(zz1 zz2 zz3 zz4 zz5 zz6 other1 other2 other3 other4 other5 other6)
 1 1 0 0 0 1 0 0 0 0 0 0 0 1
 2 0 0 0 0 0 0 1 0 0 0 0 0 1
 3 0 0 0 0 0 0 1 0 0 0 0 0 1
 4 0 0 0 0 0 0 1 0 0 0 0 0 1
 5 1 0 0 0 0 1 0 0 0 1 0 0 0
 6 0 0 0 0 0 0 1 0 0 0 0 0 1
 7 0 1 0 0 0 0 0 1 0 0 0 0 0
 8 0 0 0 0 0 0 1 0 0 0 0 0 1
 9 0 0 0 0 0 0 1 0 0 0 0 0 1
10 0 0 0 0 0 0 1 0 0 0 0 0 1
end

How can I replace 1 in zz* and other* with 0.5 when split=1? Thanks.

[Ken Chui]

foreach x of varlist zz1-zz6 other1-other6{
    replace `x' = 0.5 if `x' == 1 & split == 1
}

[William Lisowski]

recode zz* other* (1=.5) if split==1

. recode zz* other* (1=.5) if split==1
(0 changes made to zz1)
(0 changes made to zz2)
(0 changes made to zz3)
(1 changes made to zz4)
(1 changes made to zz5)
(0 changes made to zz6)
(0 changes made to other1)
(0 changes made to other2)
(1 changes made to other3)
(0 changes made to other4)
(0 changes made to other5)
(1 changes made to other6)

Note that the affected variables are recast from byte to float.

* Example generated by -dataex-. For more info, type help dataex
clear
input float(id split) byte(zz1 zz2 zz3) float(zz4 zz5) byte(zz6 other1 other2) float other3 byte(other4 other5) float other6
 1 1 0 0 0 .5  0 0 0 0  0 0 0 .5
 2 0 0 0 0  0  0 1 0 0  0 0 0  1
 3 0 0 0 0  0  0 1 0 0  0 0 0  1
 4 0 0 0 0  0  0 1 0 0  0 0 0  1
 5 1 0 0 0  0 .5 0 0 0 .5 0 0  0
 6 0 0 0 0  0  0 1 0 0  0 0 0  1
 7 0 1 0 0  0  0 0 1 0  0 0 0  0
 8 0 0 0 0  0  0 1 0 0  0 0 0  1
 9 0 0 0 0  0  0 1 0 0  0 0 0  1
10 0 0 0 0  0  0 1 0 0  0 0 0  1
end

[River Huang]

Dear Ken, Thanks. It worked.

[River Huang]

Dear William, Thanks also for this helpful suggestion.